Amur leopards survive on a diet built around medium-sized deer, with roe deer and sika deer together making up nearly half of their prey by biomass. But the full picture of what these critically endangered cats eat is more varied and more tangled with human activity than a simple list of wild ungulates would suggest. Domestic dogs, small mammals, and even clams show up in the diet, and the balance of what an Amur leopard hunts at any given time has direct consequences for its exposure to disease, its ability to reproduce, and ultimately the survival of the entire population.
What Amur Leopards Eat Most
A DNA metabarcoding study of Amur leopard diets in northeast China identified the top three prey species by biomass contribution: roe deer at about 29%, sika deer at roughly 20%, and domestic dogs at around 16%. Together, those three sources account for about two-thirds of all prey biomass consumed.1PubMed Central. DNA metabarcoding analysis of the North China and Amur Leopards’ feeding habits That means roe deer alone supply nearly a third of the energy these leopards take in, making it the single most important prey item in their range.
Sika deer occupy the second spot, and while they are larger-bodied than roe deer, they appear less frequently in leopard scats. This likely reflects both lower sika deer density across parts of the leopard’s range and the fact that sika deer are harder for a leopard to bring down compared to the smaller roe deer. Leopards are ambush hunters that typically select prey they can subdue quickly and drag to cover, so the size and availability of each species shapes how often it ends up on the menu.
How Prey Preferences Shift With the Seasons
Amur leopard diets are not static across the year. A study examining prey selection in northeast China found that during winter, leopards showed a preference for sika deer while avoiding wild boar and roe deer. In summer, by contrast, no strong preference or avoidance was detected for any individual prey species.2PubMed Central. Seasonal food habits and prey selection of Amur tigers and Amur leopards in Northeast China
The winter shift toward sika deer makes sense in the context of the landscape. In deep snow, roe deer are more agile relative to larger ungulates, and wild boar can be dangerous prey for a solitary cat. Sika deer, which tend to congregate in lower-elevation forest patches during winter, become easier to locate and ambush. In summer, prey is more evenly distributed and more active, so leopards apparently take what comes without specializing. This opportunistic summer pattern contrasts sharply with Amur tigers sharing the same habitat, which showed clear seasonal preferences for wild boar year-round.
A Surprisingly Broad Menu
Beyond deer, Amur leopards eat a range of smaller animals that the Amur tiger largely ignores. A study of winter food habits in the Russian Far East found that leopards consumed squirrels, rodents, birds, and even clams, none of which appeared in tiger feces from the same area.3Mammalian Biology. Winter food habits of sympatric carnivores, Amur tigers and Far Eastern leopards, in the Russian Far East Both species ate mid-sized carnivores and small mammals, but the leopard’s prey list was considerably more diverse.
This dietary flexibility is partly a function of body size. Amur leopards weigh roughly 30 to 50 kilograms, which is large enough to bring down a deer but small enough that catching a hare or a squirrel is not a wasted effort the way it would be for a 200-kilogram tiger. Flexibility also matters ecologically: when preferred ungulate prey are scarce, the ability to fill energy gaps with smaller animals can be the difference between starving and surviving through a hard winter. That said, small prey alone cannot sustain an adult leopard long-term, and an over-reliance on it comes with hidden health risks covered further below.
How Much Prey a Female With Cubs Needs
Feeding requirements become especially demanding for breeding females. A population viability study estimated that a female Amur leopard with cubs needs roughly 2,000 kilograms of prey biomass per year, factoring in about 30% lost to inedible parts, spoilage, and scavenging by other animals.4PubMed Central. Contributions of distemper control and habitat expansion to the Amur leopard viability To put that in perspective, an adult roe deer weighs around 25 to 30 kilograms. A mother leopard raising cubs would need the equivalent of roughly 80 roe deer a year if roe deer were her only prey, or a mix of fewer large kills and many smaller ones.
That annual requirement sets a hard floor on habitat quality. A patch of forest might look suitable based on vegetation alone, but if it does not support enough ungulate prey to meet that threshold, a female cannot raise cubs there. Prey density is therefore one of the most direct constraints on whether the Amur leopard population can grow. Conservation efforts that focus solely on protecting leopards from poaching but ignore the health of deer herds may miss the bottleneck that matters most for population recovery.
Domestic Dogs as a Dietary Wildcard
One of the more striking findings in recent diet analyses is the role of domestic dogs. At roughly 16% of prey biomass, dogs rank as the third most important food source for Amur leopards in parts of their Chinese range.1PubMed Central. DNA metabarcoding analysis of the North China and Amur Leopards’ feeding habits These are not feral dogs roaming wilderness areas. Many are free-ranging village dogs living on the edges of forests where leopards also travel.
The frequency of dog predation signals two things. First, leopards are regularly moving through or near human-settled areas, which increases the risk of conflict and retaliatory killing. Second, the high proportion of dogs in the diet suggests that wild prey density in some areas may not be sufficient to meet leopard needs, pushing them toward anthropogenic food sources. Research on leopard distribution supports this interpretation: leopards tend to concentrate in areas where the density of natural prey is high and domestic cattle are scarce, and conservation strategies emphasize reducing livestock grazing to improve habitat quality.5Biological Conservation. A science-based approach to guide Amur leopard recovery in China Where wild prey is adequate, leopards have less reason to approach villages and eat dogs.
The human side of this equation is complicated. In the Yanbian region of Jilin province, surveys found that about 10% of families had lost cattle or poultry to carnivore predation, though the identified predators were mostly leopard cats, bears, and tigers rather than Amur leopards.6PLOS ONE. Community attitudes towards Amur tigers (Panthera tigris altaica) and their prey species in Yanbian, Jilin province, a region of northeast China where tigers are returning Still, the presence of large cats near villages shapes community attitudes toward all carnivores. Compensation programs for cattle losses exist but do not always cover other forms of wildlife damage, leaving some residents frustrated. That frustration can translate into tolerance for poaching or resistance to habitat protections, making the human-wildlife boundary a critical front in Amur leopard conservation.
When Diet Becomes a Disease Risk
The composition of an Amur leopard’s diet has an unexpected link to one of its biggest health threats: canine distemper virus (CDV). CDV can infect a wide range of carnivores and has caused documented die-offs in other big cat populations. Compared to the Amur tiger, a larger share of the Amur leopard’s prey species can carry CDV, and that share grows when preferred ungulate prey become scarce and leopards compensate by eating more small carnivores like raccoon dogs and badgers.4PubMed Central. Contributions of distemper control and habitat expansion to the Amur leopard viability
The mechanism is intuitive once you think about it. A leopard killing a roe deer has virtually no CDV exposure from the meal itself. A leopard killing and consuming a raccoon dog that was shedding the virus is a different story. When ungulate numbers drop and leopards shift more of their hunting effort toward small carnivores, every meal carries a higher probability of CDV exposure. Combined with the virus’s high transmissibility and mortality rate in cats, even a small shift in diet composition can meaningfully increase the death risk for individual leopards.
For a population numbering only around 100 individuals in the wild, losing even a handful of adults to CDV in a single epizootic cycle could push the population closer to a tipping point. The modeling study that estimated annual prey requirements also calculated an average yearly CDV infection probability of about 0.29 for susceptible leopards during typical epizootic cycles, meaning roughly one in three or four susceptible individuals might encounter the virus in a given year. Protecting ungulate prey populations is therefore not just about making sure leopards have enough food; it is about keeping their diet composition in a zone that minimizes contact with CDV-carrying species.
How Prey Habitat Shapes Where Leopards Go
Amur leopards do not simply roam their forests evenly. Where they go is heavily influenced by where their prey concentrates, and prey distribution is itself shaped by habitat features like forest type, elevation, and distance from roads. A spatial analysis of predator-prey habitat selection found that the habitat preferences of roe deer and wild boar were key predictors of Amur leopard occurrence across the landscape.7PubMed Central. Spatial Heterogeneity of Habitat Selection of Large Carnivores and Their Ungulate Prey in Proximity to Roads In other words, map where the deer want to be, and you have a good map of where leopards will follow.
Roads complicate this picture. Roads fragment habitat and alter the behavior of both prey and predators. Deer may avoid road corridors, and when they do, leopards lose access to hunting grounds on the other side. The same study emphasized that managing prey habitat near roads could help leopards cross these barriers, an insight that has practical implications for corridor design and land-use planning. Rather than building expensive wildlife overpasses primarily for leopards, it may be more effective to ensure that prey habitat on both sides of a road remains attractive to ungulates, which in turn draws leopards across.
Inside protected areas, the picture is better. Camera trap surveys in the Hunchun region found that leopard detection rates were about 1.3 times higher inside the reserve than in surrounding buffer zones, reflecting the higher prey density and lower human disturbance within reserve boundaries.5Biological Conservation. A science-based approach to guide Amur leopard recovery in China That ratio indicates reserves are doing their job, but also that leopards are not confined to them. A third of all leopard detections came from outside the reserve, underlining that protected areas alone are not sufficient if the surrounding landscape cannot support adequate prey.
Competition With the Amur Tiger
Amur leopards share their range with Amur tigers, and the two species overlap substantially in prey preferences. Both hunt roe deer, sika deer, and wild boar. The key difference is scale: tigers can regularly take adult wild boar and large sika deer, while leopards generally target smaller individuals or shift to smaller-bodied species to avoid competing head-on. The winter prey data reflects this split: tigers in the same study area showed a strong year-round preference for wild boar, while leopards actively avoided it in winter.2PubMed Central. Seasonal food habits and prey selection of Amur tigers and Amur leopards in Northeast China
This dietary partitioning allows coexistence, but it is not cost-free for leopards. Where tiger densities are high, leopards are pushed toward suboptimal prey. They may rely more on smaller animals, approach human settlements more often, or shift to marginal habitats where deer density is lower. The leopard’s broader dietary flexibility, eating everything from sika deer to clams, is partly an adaptation to living alongside a larger, dominant competitor. In a sense, the leopard’s willingness to eat almost anything is not a sign of dietary strength but a survival strategy shaped by millions of years of living in a tiger’s shadow.
As both populations slowly recover, managers will need to ensure that prey density is high enough to support both predators without forcing leopards into increasingly marginal foraging strategies. In areas where only leopards are currently present, prey management is comparatively straightforward. But in the zones where both cats overlap, the math gets tighter, and every roe deer or sika deer killed by a poacher is one fewer prey animal shared between two endangered predators.
Hunting Technique and Terrain
Amur leopards are classic ambush predators. They rely on dense forest cover to stalk within a short striking distance of prey, then use a burst of speed over a few dozen meters to close the gap. Unlike cheetahs or African wild dogs, they do not pursue prey over long distances. A failed ambush usually means the leopard goes hungry for that attempt rather than chasing a deer through open terrain.
This hunting style places a premium on forest structure. Forests with dense understory and broken terrain give leopards the concealment they need for stalking. Open areas, even if ungulate-rich, are largely useless to a leopard that cannot get close enough to strike. Logging, fire, and agricultural clearing do not just shrink the total amount of habitat; they degrade the remaining habitat’s quality for ambush hunting, even when prey populations remain intact. A deer standing in a cleared field is functionally invisible to a leopard that has no cover for approach.
Snow also plays a role. In winter, deep snow can slow deer, making them easier to catch, but it also slows the leopard. Amur leopards have proportionally larger paws than some of their southern relatives, spreading their weight more effectively on snow, though they are not as well adapted to deep snow as the lynx species they share the forest with. The winter preference for sika deer over roe deer may partly reflect the fact that sika deer, being heavier, sink deeper into snow and become relatively easier targets for an ambush predator whose own movement is also hampered.
After a kill, leopards typically drag prey into dense vegetation or up a slope to cache it away from tigers, bears, and other scavengers. This caching behavior is critical in winter, when a single deer carcass can provide meals over several days. Losing a kill to a tiger or a pack of wild dogs before it is fully consumed has real energetic consequences, especially for a mother feeding cubs who already needs roughly 2,000 kilograms of prey annually.